Question: 
If the ratio of speed of doing work of the persons is 1 : 3 : 5 , what is the ratio of this taken by these people to do the same amount of work ?
15 : 5 : 7
15 : 5 : 3
3 : 15 : 5
Answer: 
15 : 5 : 3
Last Updated: 
10/11/2021 - 17:00